One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(7,8)(9,10)(11,13)(12,14)(15,16)(17,18,21,25,20,24,29,23)(19,26,28,32,27,22,30,31)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(17,19,20,27)(18,22,24,26)(21,28,29,30)(23,32,25,31)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(18,23)(19,27)(21,29)(22,31)(24,25)(26,32)(2,6)(7,8)(11,16)(13,15)(17,19)(18,22)(20,27)(21,28)(23,32)(24,26)(25,31)(29,30) involution — undirected(1,4,5,3)(2,8,6,7)(10,14)(13,15)(18,24)(19,27)(23,25)(28,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.